Crown Charger Module FS3-MP344-4

Warning: This test requires trained personnel!

LCD displays the start-up screen

Display changes to Test Mode Disabled after holding down the 'Up' and 'Down' buttons for 10 seconds

Self-Test Disabled menu is accessible after pressing the 'Down' button

Self Test is enabled after pressing the 'Up' button and the ENTER button

Red Charging lamp is illuminated and the display reads Red Led Test after toggling the On/Off switch

Green Ready lamp is illuminated and the display reads Green Led Test

Buzzer is sounding in the Buzzer Test menu

The next 3 tests are automated and require no user intervention

Warning: This procedure requires trained personnel with PPE!

Module taken to a suitable location for cleaning

Build-up brushed from the front grills without forcing it down into the fans

Length of the screw driver used to lock the fan impeller in place

Compressed air blower used to blow the dust through the module and out the back

Gentle air flow used to clean out the internal area of the module

Does the Charger Module have considerable dust build up?

Housing blown out if there was considerable dust build up

Charger Module not opened under any circumstance

Warning: This service requires trained personnel with PPE!

Air inlet filter free from dirt build up?

Charger Modules' airflow monitoring functional?

Charger Modules' cooling air supply healthy?

Note: A blocked filter will affect the cooling ability, reduced airflow could lead to the Charger protecting itself by backing off the output power and eventually shutting down.

Power modules backed off due to over temperature?

Note: Having the power modules back off due to over temperature will cause longer charge times and the inability to charge the battery correctly, units operated with blocked filters for extended periods will result in premature failure of the Charger Module cooling fans.

Number of charge cycles performed

Sign off on the charger service

Warning: Ensure to wear safety gloves and goggles before starting the procedure.

Filter material is an electrostatic polypropylene type?

Remove the filter from the housing and take it to an appropriate place to be cleaned.

Filter removed from the housing?

Clean the filter with compressed air or in extreme situations wash with clean soapy water.

Filter cleaned with compressed air or washed with soapy water?

If washed, the filter must be left to dry fully before being refitted to the charger.

Filter fully dried before refitting?

Inspect the front air inlet grills of the Charger Modules for excessive signs of dirt build up.